Home / 5,656.49-7,806.39-3,139.08

Finding the Fourth Proportional to 5,656.49, 7,806.39 and 3,139.08

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Solution

The fourth proportional to 5,656.49, 7,806.39 and 3,139.08 is: 4,332.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.49 : 7,806.39 = 3,139.08 : x
  2. Step 2: Convert to fraction form
    5,656.49/7,806.39 = 3,139.08/x
  3. Step 3: Cross multiply
    5,656.49x = 7,806.39 × 3,139.08
  4. Step 4: Simplify right side
    5,656.49x = 24,504,855.36
  5. Step 5: Solve for x
    x = 24,504,855.36/5,656.49
  6. Step 6: Final answer
    x = 4,332.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.